Trailer side bottom rail



FIG. 1 is a front and side perspective view of a trailer side bottom rail showing our new design, the broken lines are shown for illustrative purposes only and form no part of the claimed design;

FIG. 2 is an enlarged fragmentary front and side perspective view thereof;

FIG. 3 is a greatly enlarged fragmentary end elevational view thereof;

FIG. 4 is a greatly enlarged fragmentary top plan view thereof;

FIG. 5 is a greatly enlarged fragmentary front elevational view thereof;

FIG. 6 is a greatly enlarged fragmentary rear elevational view thereof; and,

FIG. 7 is a greatly enlarged fragmentary bottom view thereof.

The end portions of the design shown broken away in FIGS. 2, 4, 5, 6 and 7 are for convenience of illustration. 

The ornamental design for a trailer side bottom rail, as shown and described. 